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A condition encountered by the server while performing a command or other operation
that causes the command or operation to fail.
system image tape (SIT)
The tape used when a processor is loaded from tape in an emergency situation. The SIT,
which is generated by the SYSGENR program and copied to tape by the BACKUP
program, contains a minimum set of software needed to bring up and run the system. The
SIT contains tape boot, disk boot, and NonStop Kernel operating system images.
system load
To start the system which loads the NonStop Kernel operating system image, typically
from the OSIMAGE file in the SYSnn subvolume of a specified disk volume into the
memory of a halted processor. All processors must be halted before you can perform a
system load. To load the system, use the OSM Low-Level Link.
system serial number
A unique number assigned to a NonStop S-series server when it is built. OSM uses the
system serial number for connections between the workstation and the server. The system
serial number, typically five or six alphanumeric characters, can be used for ordering and
tracking purposes.
T
tape load
A system load. The process of reading the system image tape (SIT) and writing it to the
system disk. In the event of a disaster, the normal procedure for loading a system is to
restore the SIT from tape to a SYSnn subvolume and then load the system from that
subvolume. To perform a tape load, use the processor action SIT Load.
Tetra 8 topology
Atetrahedral topology of NonStop S-series servers that allows a maximum of four
processor enclosures (eight processors) and eight I/O enclosures. Contrast with Tetra 16
topology.
Tetra 16 topology
A tetrahedral topology of NonStop S-series servers that allows a maximum of eight
processor enclosures (16 processors). The maximum number of I/O enclosures allowed
by the Tetra 16 topology varies depending on the release version update (RVU) and the
server model. Contrast with Tetra 8 topology.
tetrahedron
A solid bounded by four triangular faces. In ServerNet context, a tetrahedron is four
processors interconnected by ServerNet links so as to form a conceptual tetrahedron.
Each processor therefore has a direct connection to the other three processors. See